70 lines
1.7 KiB
JavaScript
70 lines
1.7 KiB
JavaScript
'use strict';
|
|
|
|
var has = require('has');
|
|
|
|
function specifierIncluded(current, specifier) {
|
|
var nodeParts = current.split('.');
|
|
var parts = specifier.split(' ');
|
|
var op = parts.length > 1 ? parts[0] : '=';
|
|
var versionParts = (parts.length > 1 ? parts[1] : parts[0]).split('.');
|
|
|
|
for (var i = 0; i < 3; ++i) {
|
|
var cur = parseInt(nodeParts[i] || 0, 10);
|
|
var ver = parseInt(versionParts[i] || 0, 10);
|
|
if (cur === ver) {
|
|
continue; // eslint-disable-line no-restricted-syntax, no-continue
|
|
}
|
|
if (op === '<') {
|
|
return cur < ver;
|
|
}
|
|
if (op === '>=') {
|
|
return cur >= ver;
|
|
}
|
|
return false;
|
|
}
|
|
return op === '>=';
|
|
}
|
|
|
|
function matchesRange(current, range) {
|
|
var specifiers = range.split(/ ?&& ?/);
|
|
if (specifiers.length === 0) {
|
|
return false;
|
|
}
|
|
for (var i = 0; i < specifiers.length; ++i) {
|
|
if (!specifierIncluded(current, specifiers[i])) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function versionIncluded(nodeVersion, specifierValue) {
|
|
if (typeof specifierValue === 'boolean') {
|
|
return specifierValue;
|
|
}
|
|
|
|
var current = typeof nodeVersion === 'undefined'
|
|
? process.versions && process.versions.node && process.versions.node
|
|
: nodeVersion;
|
|
|
|
if (typeof current !== 'string') {
|
|
throw new TypeError(typeof nodeVersion === 'undefined' ? 'Unable to determine current node version' : 'If provided, a valid node version is required');
|
|
}
|
|
|
|
if (specifierValue && typeof specifierValue === 'object') {
|
|
for (var i = 0; i < specifierValue.length; ++i) {
|
|
if (matchesRange(current, specifierValue[i])) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
return matchesRange(current, specifierValue);
|
|
}
|
|
|
|
var data = require('./core.json');
|
|
|
|
module.exports = function isCore(x, nodeVersion) {
|
|
return has(data, x) && versionIncluded(nodeVersion, data[x]);
|
|
};
|